2013
DOI: 10.1016/j.talanta.2012.12.017
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Biosensor based on multi-walled carbon nanotubes paste electrode modified with laccase for pirimicarb pesticide quantification

Abstract: This study focused on the development of a sensitive enzymatic biosensor for the determination of pirimicarb pesticide based on the immobilization of laccase on composite carbon paste electrodes. Multi-walled carbon nanotubes (MWCNTs) paste electrode modified by dispersion of laccase (3%, w/w) within the optimum composite matrix (60:40%, w/w, MWCNTs and paraffin binder) showed the best performance, with excellent electron transfer kinetic and catalytic effects related to the redox process of the substrate 4-am… Show more

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Cited by 92 publications
(40 citation statements)
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References 41 publications
(79 reference statements)
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“…Recent advances in this field are related to the development of new support matrix as suitable platforms (most of them including nanomaterials) for enzymes immobilization, which lead to biosensors with improved analytical properties. So, in recent works, laccase has been immobilized by direct adsorption, covalent binding or entrapment onto: epoxy resin membranes [9], mesoporous materials with well-controlled pore structures [10,17], multi-walled carbon nanotubes paste electrodes [18], nanocomposites formed by chitosan and carbon nanotubes [19], copper-containing ordered mesoporous carbon chitosan matrix [8], pyrenehexanoic acid-modified hierarchical carbon microfibers/carbon nanotubes composite electrodes [16], polyvinyl alcohol photopolymers [20], sol-gel matrix of 5 diglycerylsilane [21], 3-mercaptopropionic acid self-assembled monolayer modified gold electrodes [22], cysteine self-assembled monolayer and quantum dots modified gold electrodes [23], nanocomposites of silver nanoparticles and zinc oxide nanoparticles electrochemically deposited onto gold electrodes [24], platinum nanoparticles and reduced graphene composites deposited onto screen printed electrodes [25], polyethyleneimine coated gold-nanoparticles modified glassy carbon electrodes…”
Section: Introductionmentioning
confidence: 99%
“…Recent advances in this field are related to the development of new support matrix as suitable platforms (most of them including nanomaterials) for enzymes immobilization, which lead to biosensors with improved analytical properties. So, in recent works, laccase has been immobilized by direct adsorption, covalent binding or entrapment onto: epoxy resin membranes [9], mesoporous materials with well-controlled pore structures [10,17], multi-walled carbon nanotubes paste electrodes [18], nanocomposites formed by chitosan and carbon nanotubes [19], copper-containing ordered mesoporous carbon chitosan matrix [8], pyrenehexanoic acid-modified hierarchical carbon microfibers/carbon nanotubes composite electrodes [16], polyvinyl alcohol photopolymers [20], sol-gel matrix of 5 diglycerylsilane [21], 3-mercaptopropionic acid self-assembled monolayer modified gold electrodes [22], cysteine self-assembled monolayer and quantum dots modified gold electrodes [23], nanocomposites of silver nanoparticles and zinc oxide nanoparticles electrochemically deposited onto gold electrodes [24], platinum nanoparticles and reduced graphene composites deposited onto screen printed electrodes [25], polyethyleneimine coated gold-nanoparticles modified glassy carbon electrodes…”
Section: Introductionmentioning
confidence: 99%
“…O biossensor desenvolvido se mostrou uma ferramenta promissora para identificar a presença do pesticida pirimicarbe em amostras de vegetais. 92 Ainda em 2013, LIU et al desenvolveram um biossensor de acetilcolinesterase baseado em um compósito de aerogéis de carbono e platina com o objetivo de determinar pesticidas organofosforados, no caso os metamidofós e monocrotofós. O limite de detecção encontrado foi de 3,1x10 −13 mol.L −1 para metamidofós e 2,7x10 −12 mol.L −1 para monocrotofós.…”
Section: Pesticidasunclassified
“…For the realisation of substrate recycling, the biosensor reaction should be reversible. Catechols (benzenediols) represent one of the most commonly used substrates in such systems [119][120][121] due to reversibility of the redox reaction of the phenolic ring and due to the relevance of their determination with high sensitivity f or medical, f ood saf ety and environmental applications. In Fig.…”
Section: 1 S Ubstrate Recycling Mechanismmentioning
confidence: 99%